Alclad consists of aluminum with what structure?

• A. Pure Aluminum Surface Layers on an Aluminum Alloy Core
• B. Aluminum Surface on Copper Core
• C. Nickel Plating on Aluminum
• D. Aluminum Oxides on Steel

Answer: (A)

Alclad uses thin skins of near-pure aluminum bonded to an aluminum alloy core. The outer layers are almost pure aluminum to maximize corrosion resistance, because pure aluminum forms a very protective oxide film. The inner core is an aluminum alloy that provides the needed strengths and stiffness. This pairing keeps the part lightweight and durable, resisting environmental attack while maintaining good mechanical properties. The other options don’t fit because they describe a different core material or a different surface treatment (a copper core, nickel plating, or aluminum oxide on steel), which isn’t what Alclad employs.